(Evaluating liquidity) The Allen Marble Company has a target current ratio of 2.0 but has experienced some difficulties financing its expanding sales in the past few months. At present the firm has current assets of $2.5 million and a current ratio of 2.5. If Allen expands its receivables and inventories using its short-term line of credit, how much additional short-term funding can it borrow before its current ratio standard is reached? The addition to current assets is $ (Round to the nearest dollar.)